Weber, Michael E (2011): Investigations on a sediment core from the Indian Ocean. PANGAEA, https://doi.org/10.1594/PANGAEA.761593, Supplement to: Weber, ME (1997): Quantitative Ableitung sedimentphysikalischer Parameter mit Hilfe eines Multi-Sensor Core Loggers - neue Wege in der Analytik mariner Sedimente. Zeitschrift für Angewandte Geologie, 43, 144-153, hdl:10013/epic.37615.d001
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The Multi-Sensor Core Logger (MSCL) enables non-destructive, quasi-continuous measuroments of physical properties, reducing the time needed for discrete sample analysis. Density, compressional wave velocity (Vp), and magnetic susceptibility are measured on water-saturated sediment cores. Rapid variations in the lithology can thus be more easily recognized. The advantages of MSCL measurements over traditional sedimentological investigation methods are illustrated using several examples. Density-Vp relationships provide detailed lithological information prior to splitting the sediment cores. In terrigenous sediments, density increases with Vp, whereas in biogenic sediments it decreases. In biogenic sediments in the South Atlantic, low densities and high Vp are associated with high opal content. In biogenic sediments in the Peru Basin, density increases with carbonate content. Carbonate, which is very important for deep-sea environmental protection and for paleoclimatic studies, can be determined quantitatively from MSCL measurements in this area. In terrigenous sediments in the Bengal Fan, the acoustic impedance (the product of density and Vp) increases with grain size. There, the grain-size distribution can be rapidly derived from the acoustic impedance. Moreover, in hemipelagic sediments in the Bengal Fan, it is possible to correlate variations in magnetic susceptibility with cyclic changes in the earth's orbital parameters - an important prerequisite for detailed stratigraphic studies.
Latitude: 0.755170 * Longitude: 83.338830
Date/Time Start: 1994-01-15T18:00:00 * Date/Time End: 1994-01-15T18:00:00
SO93/1_22KL * Latitude: 0.755170 * Longitude: 83.338830 * Date/Time: 1994-01-15T18:00:00 * Elevation: -4421.0 m * Location: Indian Ocean * Campaign: SO93/1 (BENGAL FAN) * Basis: Sonne * Method/Device: Piston corer (BGR type) (KL) * Comment: marginal seamount 50 m above plain, pelagic sequence with turbidity influence; 7,22 sec. ash
Datasets listed in this publication series
- Weber, ME (2000): Age model of sediment core SO93-22KL. https://doi.org/10.1594/PANGAEA.57355
- Weber, ME (2000): Stable isotopes measured on C. wuellerstorfi from sediment core SO93-22KL. https://doi.org/10.1594/PANGAEA.57356